/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: ${USER}
 * Date: ${YEAR}-${MONTH}-${DAY}
 * Time: ${TIME}
 */
public class Main {
    public static void main(String[] args) {
        class Solution {
            public String toLowerCase(String s) {
                char[] str = s.toCharArray();
                for(int i = 0;i < str.length;i++){
                    if(str[i] >= 'A'&&str[i] <= 'Z'){
                        str[i] += 32;
                    }
                }
                String s1 = new String(str);
                return s1;
            }
        }
    }
}